JPS60162943U - ground fault relay - Google Patents
ground fault relayInfo
- Publication number
- JPS60162943U JPS60162943U JP4886784U JP4886784U JPS60162943U JP S60162943 U JPS60162943 U JP S60162943U JP 4886784 U JP4886784 U JP 4886784U JP 4886784 U JP4886784 U JP 4886784U JP S60162943 U JPS60162943 U JP S60162943U
- Authority
- JP
- Japan
- Prior art keywords
- ground fault
- fault relay
- amplifier
- electrical system
- ground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Protection Of Static Devices (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図及び第２図は、本考案に係る一実施例を１
示すもので、第１図はその地絡保護継電方式の系統図、
第２図は地絡継電器の入力回路図である。
４・・・零相変流器（ＺＣＴ）、５・・・インバータ電
源、７１．７２．７３・・・対地静電容量、８・・・地
絡継電器、８８１，８０３，８０４・・・抵抗器、８０
５・・・演算増幅器、８１０，８１１，８１２・・・抵
抗器、８１３・・・演算増幅器、８１５・・・コンパレ
ータ、８１８・・・発光ダイオード。Figures 1 and 2 show one embodiment of the present invention, and Figure 1 is a system diagram of the earth fault protection relay system.
FIG. 2 is an input circuit diagram of a ground fault relay. 4...Zero-phase current transformer (ZCT), 5...Inverter power supply, 71.72.73...Ground capacitance, 8...Ground fault relay, 881,803,804...Resistance vessel, 80
5... operational amplifier, 810, 811, 812... resistor, 813... operational amplifier, 815... comparator, 818... light emitting diode.
Claims (1)
る地絡継電器であって、前記電気系統の地絡事故発生を
電気量とし７て検出する手段と、その検出された電気量
を増幅する増幅器と、前記電気系統図に分布して存在す
る対地静電容量を通して流れる電流に起因する前記増幅
器の出力と同レベルで逆極性の電気量を前記増幅器に加
算する手段とを備えたことを特徴とする地絡継電器。A ground fault relay used in an electrical system equipped with a variable voltage/variable frequency power supply, comprising means for detecting the occurrence of a ground fault accident in the electrical system as an electrical quantity, and an amplifier for amplifying the detected electrical quantity. and means for adding to the amplifier an amount of electricity having the same level and opposite polarity as the output of the amplifier caused by the current flowing through the ground capacitance distributed in the electrical system diagram. Ground fault relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4886784U JPS60162943U (en) | 1984-04-03 | 1984-04-03 | ground fault relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4886784U JPS60162943U (en) | 1984-04-03 | 1984-04-03 | ground fault relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60162943U true JPS60162943U (en) | 1985-10-29 |
Family
ID=30565523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4886784U Pending JPS60162943U (en) | 1984-04-03 | 1984-04-03 | ground fault relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60162943U (en) |
-
1984
- 1984-04-03 JP JP4886784U patent/JPS60162943U/en active Pending
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